Method and system to generate object image slices

Inactive Publication Date: 2007-08-09
GENERAL ELECTRIC CO
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Conventional (projection) X-ray imaging does not allow for viewing of

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  • Method and system to generate object image slices
  • Method and system to generate object image slices
  • Method and system to generate object image slices

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Embodiment Construction

[0016] An embodiment of the invention provides a radiologist with an interface to take advantage of flexibility to tailor tomosynthesis image slice thickness to best suit the diagnostic requirements of an application. Although a minimum (nominal) image slice thickness may provide maximum resolution within a direction of slice thickness, thicker slices may provide practical benefit in many clinical settings.

[0017] First, there are a number of clinical applications that favor thicker slices. For example, to diagnose interstitial diseases, the slice thickness of at least 1 cm may be preferred because vessel continuation is much better visualized. Another example is mammography, where the slice thickness of about 1 cm is advantageous to diagnose a presence of clustered micro calcifications. Second, image noise and artifacts are reduced during the forming of thicker slices. This is because of improved data consistency with thicker slices relative to thinner slices. In certain clinical a...

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Abstract

A method for creating a variable slice thickness for displaying an imaged object is disclosed. The method includes acquiring a plurality of projection images from a plurality of different projection angles within a defined sweep angle, reconstructing a plurality of object images from the plurality of projection images, each object image having a first slice thickness, and applying a function rule to combine images, whole images or portions thereof or attributes thereof, of the plurality of projection images, of the plurality of object images, or of both, thereby providing for the display of the object utilizing a second slice thickness that varies from the first slice thickness.

Description

BACKGROUND OF THE INVENTION [0001] The present disclosure relates generally to medical imaging, and particularly to the generation of object image slices. [0002] Conventional (projection) X-ray imaging does not allow for viewing of detailed cross-sections of tissue structures at a predetermined depth. Tomosynthesis is an advanced application in X-ray radiographic imaging that allows retrospective reconstruction of an arbitrary number of tomographic planes of anatomy from a set of low-dose projection images acquired during a defined translation of an x-ray source, and provides for depth information relating to the projection images. The use of a digital flat panel, which may measure 40 centimeters (cm)×40 cm for example, allows large amounts of data to be collected with each exposure. The depth information carried by these tomographic planes is unavailable in conventional (projection) x-ray imaging. [0003] With the introduction of tomosynthesis, it is possible to encode the depth inf...

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Application Information

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IPC IPC(8): H05G1/60A61B6/00G01N23/00G21K1/12
CPCA61B6/465A61B6/025
Inventor LI, BAOJUNMETZ, STEPHEN W.HSIEH, JIANGSRINIVAS, YOGESHNI, XIANFENGPATZ, TABB
Owner GENERAL ELECTRIC CO
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